Investigating

Skymark: employee and former-employee personal data left viewable; possible leak

After inspecting servers following an earlier careers-form issue, Skymark found some employee and former-employee personal data had been viewable from outside or inside the company and announced a possible leak on November 2.

Last updated: 2026-11-09

Overview

Three overlapping sets (6,692 with photos/employee numbers; 4,247 with names/passwords/logs; 5,467 with names/birth dates/emails) are not summed (count blank). No third-party acquisition was seen in logged periods, but unlogged periods led to a PPC report.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Says access was closed and the investigation and remediation are complete.

What you can do

Be wary of emails, SMS or calls impersonating the organisation; do not open links or attachments or enter passwords or card details. Change reused passwords on other services.

Sources

  1. 社員の個人情報の漏えいのおそれに関するお詫びとお知らせスカイマーク株式会社 · 2026-11-09

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